boilerplate enable/disable button functions

gistfile1.txt

        function enableButton(el) { //el = '[attr="value"]'
            //make it optional to send an el
            var ele = document.querySelectorAll(el) || document.querySelectorAll('[type="submit"]');
            if(ele.length === 0) { console.log('enableButton called but no button was found in the dom'); return; }
            ele.innerHeight = ele.attr.getValue("data-btn-enabled-text");
            ele.classList.remove("disabled");
            ele.removeAttr('disabled');
        }

        function disableButton(el) {
            //make it optional to send an el
            var ele = el || document.querySelectorAll('[type="submit"]');
            if(ele.length === 0) { console.log('enableButton called but no button was found in the dom'); return; }
            ele.classList.add("disabled");
            ele.attr("data-btn-enabled-text", ele.innerHTML);
            ele.innerHTML = "One moment...";
            ele.attr('disabled', 'disabled');
        }